uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Genetic variation and natural selection on blue tit body condition in different environments
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Zoology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Zoology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Zoology.
1999 (English)In: Genetical Research, ISSN 0016-6723, E-ISSN 1469-5073, Vol. 73, no 2, 165-176 p.Article in journal (Other academic) Published
Abstract [en]

An increasing amount of evidence indicates that different forms of environmental stress influence the expression of genetic variance in quantitative traits and, consequently, their evolvability. We investigated the causal components of phenotypic variance and natural selection on the body condition index (a trait often related to fitness in wild bird populations) of blue tit (Parus caeruleus) nestlings under contrasting environmental conditions. In three different study years, nestlings grown under a poor feeding regime attained lower body condition than their full-sibs grown under a good feeding regime. Genetic influences on condition were large and significant in both feeding regimes, and in all three study years. However, although estimates of additive genetic variance were consistently higher in the poor than in the good environment, heritability estimates for body condition index were very similar in both environments due to higher levels of environmental variance in the poor environment. Evidence for weak genotype×environment interactions was obtained, but these contributed little to variance in nestling condition. Directional natural selection on fledging condition of nestlings was detected, and there were no indications of year or environmental effects on the form and intensity of selection observed, in a sample of 3659 nestlings over four years. However, selection on fledging condition was very weak (standardized selection gradient, β=0·027±0·016 SE), suggesting that, in the current population, the large additive genetic component to fledging condition is not particularly surprising. The results of these analyses are contrasted with those obtained for other populations and species with similar life-histories.

Place, publisher, year, edition, pages
1999. Vol. 73, no 2, 165-176 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-83179OAI: oai:DiVA.org:uu-83179DiVA: diva2:111086
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2013-10-08Bibliographically approved

Open Access in DiVA

No full text

By organisation
Department of Zoology
In the same journal
Genetical Research
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 466 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf